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LSST Data Management Base Package
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object.h
Go to the documentation of this file.
1// -*- LSST-C++ -*-
2/*
3 * This file is part of gauss2d.
4 *
5 * Developed for the LSST Data Management System.
6 * This product includes software developed by the LSST Project
7 * (https://www.lsst.org).
8 * See the COPYRIGHT file at the top-level directory of this distribution
9 * for details of code ownership.
10 *
11 * This program is free software: you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <https://www.gnu.org/licenses/>.
23 */
24
25#ifndef LSST_GAUSS2D_OBJECT_H
26#define LSST_GAUSS2D_OBJECT_H
27
28#include <string>
29#include <sstream>
30
31namespace lsst::gauss2d {
32
40class Object {
41public:
42 virtual ~Object() = default;
43
45 static constexpr std::string_view CC_NAMESPACE_SEPARATOR = "::";
46 static constexpr std::string_view NULL_STR_GENERAL = "None";
47 static constexpr std::string_view PY_NAMESPACE_SEPARATOR = ".";
48
49 static std::string_view null_str(const std::string_view &namespace_separator) {
50 return namespace_separator == CC_NAMESPACE_SEPARATOR ? "nullptr" : NULL_STR_GENERAL;
51 }
52
69 virtual std::string repr(bool name_keywords = false,
70 std::string_view namespace_separator = CC_NAMESPACE_SEPARATOR) const
71 = 0;
73 virtual std::string str() const = 0;
74
75 friend std::ostream &operator<<(std::ostream &out, const Object &obj) {
76 out << obj.str();
77 return out;
78 }
79};
80
81template <typename T>
82std::string repr_ptr(T ptr, bool name_keywords, std::string_view namespace_separator) {
83 return ptr ? ptr->repr(name_keywords, namespace_separator)
84 : std::string(Object::null_str(namespace_separator));
85}
86
87template <typename T>
88std::string repr_iter_ptr(const T &container, bool name_keywords = false,
89 std::string_view namespace_separator = Object::CC_NAMESPACE_SEPARATOR) {
90 std::string str = "[";
91 for (auto &obj : container) {
92 str += repr_ptr(obj, name_keywords, namespace_separator) + ", ";
93 }
94 auto size_str = str.size();
95 if (size_str > 1) str = str.substr(0, size_str - 2);
96 return str + "]";
97}
98
99// Putting is_wrapper first allows automatic substitution of the type
100template <bool is_wrapper, typename T>
101std::string repr_iter_ref(const T &container, bool name_keywords = false,
102 std::string_view namespace_separator = Object::CC_NAMESPACE_SEPARATOR) {
103 std::string str = "[";
104 for (const auto &obj : container) {
105 if constexpr (is_wrapper) {
106 str += obj.get().repr(name_keywords, namespace_separator);
107 } else {
108 str += obj.repr(name_keywords, namespace_separator);
109 }
110 str += ", ";
111 }
112 auto size_str = str.size();
113 if (size_str > 1) str = str.substr(0, size_str - 2);
114 return str + "]";
115}
116
117template <bool is_wrapper, typename T>
118std::string repr_map_ref(const T &container, bool name_keywords = false,
119 std::string_view namespace_separator = Object::CC_NAMESPACE_SEPARATOR) {
120 std::string str = "{";
121 for (const auto &[obj, value] : container) {
122 if constexpr (is_wrapper) {
123 str += obj.get().repr(name_keywords, namespace_separator) + ": " + std::to_string(value) + ", ";
124 } else {
125 str += obj.repr(name_keywords, namespace_separator) + ": " + std::to_string(value) + ", ";
126 }
127 }
128 return str.substr(0, str.size() - 2 * (container.size() > 0)) + "}";
129}
130
131template <typename T>
133 return ptr ? ptr->str() : std::string(Object::NULL_STR_GENERAL);
134}
135
136template <typename T>
137std::string str_iter_ptr(const T &container) {
138 std::string str = "[";
139 for (const auto &obj : container) {
140 str += str_ptr(obj) + ", ";
141 }
142 auto size_str = str.size();
143 if (size_str > 1) str = str.substr(0, size_str - 2);
144 return str + "]";
145}
146
147template <bool is_wrapper, typename T>
148std::string str_iter_ref(const T &container) {
149 std::string str = "[";
150 for (const auto &obj : container) {
151 if constexpr (is_wrapper) {
152 str += obj.get().str();
153 } else {
154 str += obj.str();
155 }
156 str += ", ";
157 }
158 auto size_str = str.size();
159 if (size_str > 1) str = str.substr(0, size_str - 2);
160 return str + "]";
161}
162
163template <bool is_wrapper, typename T>
164std::string str_map_ref(const T &container) {
165 std::string str = "{";
166 for (const auto &[obj, value] : container) {
167 if constexpr (is_wrapper) {
168 str += obj.get().str() + ": " + std::to_string(value) + ", ";
169 } else {
170 str += obj.str() + ": " + std::to_string(value) + ", ";
171 }
172 }
173 return str.substr(0, str.size() - 2 * (container.size() > 0)) + "}";
174}
175
176template <typename T>
177void stream_iter_ref(const T &container, std::ostream &stream) {
178 stream << "[";
179 for (const auto &obj : container) stream << obj << ",";
180 stream << "]";
181}
182
183} // namespace lsst::gauss2d
184#endif
A generic object from the gauss2d library.
Definition object.h:40
static constexpr std::string_view PY_NAMESPACE_SEPARATOR
Definition object.h:47
static std::string_view null_str(const std::string_view &namespace_separator)
Definition object.h:49
static constexpr std::string_view CC_NAMESPACE_SEPARATOR
The C++ namespace separator.
Definition object.h:45
virtual ~Object()=default
virtual std::string repr(bool name_keywords=false, std::string_view namespace_separator=CC_NAMESPACE_SEPARATOR) const =0
Return a full, callable string representation of this.
friend std::ostream & operator<<(std::ostream &out, const Object &obj)
Definition object.h:75
virtual std::string str() const =0
Return a brief, human-readable string representation of this.
static constexpr std::string_view NULL_STR_GENERAL
Definition object.h:46
std::string str_ptr(T ptr)
Definition object.h:132
std::string repr_map_ref(const T &container, bool name_keywords=false, std::string_view namespace_separator=Object::CC_NAMESPACE_SEPARATOR)
Definition object.h:118
std::string repr_iter_ptr(const T &container, bool name_keywords=false, std::string_view namespace_separator=Object::CC_NAMESPACE_SEPARATOR)
Definition object.h:88
std::string str_map_ref(const T &container)
Definition object.h:164
std::string str_iter_ref(const T &container)
Definition object.h:148
void stream_iter_ref(const T &container, std::ostream &stream)
Definition object.h:177
std::string repr_ptr(T ptr, bool name_keywords, std::string_view namespace_separator)
Definition object.h:82
std::string repr_iter_ref(const T &container, bool name_keywords=false, std::string_view namespace_separator=Object::CC_NAMESPACE_SEPARATOR)
Definition object.h:101
std::string str_iter_ptr(const T &container)
Definition object.h:137
T size(T... args)
T substr(T... args)
T to_string(T... args)